Ghost is confident that all signs point to the Traveler playing an active role in your fight against the Witness and its forces. Unlike Zavala, his faith seems unshakable.
For the first time in his life as a Guardian, Zavala wishes to look to the Darkness for answers, but both Cayde and Ikora believe that it's worth trying to commune with the Traveler again instead.
Regardless of who's right or who's wrong, you must at least try. Find a reliable way to connect with the Traveler.